PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-20:27:50
G01     70.4           32.9               13.2 +/-    0.73      21.7 +/-    0.73  0.110 / 0.360
G07     137.7          31.2               15.4 +/-    1.56      26.4 +/-    1.56  0.130 / 0.480
G11     54.2           31.5               11.2 +/-    0.66      19.0 +/-    0.66  0.040 / 0.080
G13     274.3          37.4               15.0 +/-    0.95      22.8 +/-    0.95  0.040 / 0.090
G15     302.5          15.3               10.6 +/-    1.86      26.2 +/-    1.86  0.070 / 0.130
G17     232.6          65.3               16.1 +/-    0.79      17.5 +/-    0.79  0.070 / 0.100
G18     49.1           18.4               10.5 +/-    0.91      23.9 +/-    0.91  0.040 / 0.050
G19     224.4          41.1               15.8 +/-    1.55      22.6 +/-    1.55  0.040 / 0.050
G28     20.7           59.1               13.0 +/-    0.31      14.9 +/-    0.31  0.050 / 0.140
G30     135.8          60.2               14.8 +/-    0.66      16.8 +/-    0.66  0.060 / 0.150