PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-19:28:10
G01     76.0           33.3               12.2 +/-    1.03      20.0 +/-    1.03  0.090 / 0.210
G07     134.8          35.4               14.2 +/-    0.97      22.4 +/-    0.97  0.120 / 0.190
G11     57.6           34.3                9.9 +/-    0.55      15.9 +/-    0.55  0.030 / 0.040
G13     280.2          37.7               12.3 +/-    0.74      18.6 +/-    0.74  0.040 / 0.040
G15     306.7          14.0                8.6 +/-    2.10      21.8 +/-    2.10  0.040 / 0.120
G17     226.3          61.7               15.3 +/-    0.61      17.1 +/-    0.61  0.050 / 0.140
G18     52.9           20.4                9.4 +/-    1.20      20.5 +/-    1.20  0.060 / 0.110
G19     221.2          36.6               14.6 +/-    2.09      22.6 +/-    2.09  0.060 / 0.090
G28     12.3           60.1               10.3 +/-    0.72      11.7 +/-    0.72  0.040 / 0.050
G30     130.3          65.1               13.6 +/-    0.43      14.9 +/-    0.43  0.050 / 0.070