PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/18-19:27:50
G01     71.9           33.1               11.6 +/-    0.97      19.0 +/-    0.97  0.050 / 0.080
G07     136.9          32.3               15.3 +/-    1.03      25.6 +/-    1.03  0.050 / 0.090
G11     54.9           32.1               10.6 +/-    0.73      17.8 +/-    0.73  0.060 / 0.120
G13     275.9          37.6               14.6 +/-    1.02      22.1 +/-    1.02  0.060 / 0.130
G15     303.9          14.8                8.5 +/-    3.25      21.3 +/-    3.25  0.050 / 0.110
G17     230.8          64.9               16.3 +/-    0.72      17.8 +/-    0.72  0.040 / 0.100
G18     50.1           18.9                9.4 +/-    1.17      21.3 +/-    1.17  0.040 / 0.040
G19     223.5          39.6               15.1 +/-    2.57      22.1 +/-    2.57  0.030 / 0.040
G28     18.3           59.4               11.6 +/-    0.51      13.2 +/-    0.51  0.070 / 0.080
G30     134.4          61.9               15.0 +/-    0.88      16.7 +/-    0.88  0.100 / 0.090