PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-20:12:50
G01     71.9           33.1               10.3 +/-    1.24      17.0 +/-    1.24  0.100 / 0.350
G07     136.9          32.3               14.4 +/-    0.81      24.0 +/-    0.81  0.100 / 0.370
G11     55.1           32.3                8.9 +/-    0.80      14.9 +/-    0.80  0.050 / 0.110
G13     276.0          37.6               14.0 +/-    0.71      21.2 +/-    0.71  0.050 / 0.100
G15     303.6          15.0                7.0 +/-    2.67      17.4 +/-    2.67  0.080 / 0.080
G17     230.7          64.3               14.9 +/-    0.98      16.4 +/-    0.98  0.090 / 0.090
G18     50.1           19.0                8.6 +/-    0.96      19.5 +/-    0.96  0.050 / 0.060
G19     223.5          39.9               14.5 +/-    0.69      21.1 +/-    0.69  0.060 / 0.060
G28     18.4           59.4               10.9 +/-    0.50      12.5 +/-    0.50  0.060 / 0.140
G30     134.4          61.5               12.7 +/-    0.45      14.2 +/-    0.45  0.060 / 0.100