PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-20:27:40
G01     37.9           11.0                9.0 +/-    4.27      24.4 +/-    4.27  0.040 / 0.080
G02     199.4          14.1               15.5 +/-    3.51      39.3 +/-    3.51  0.050 / 0.090
G06     174.6          44.3               13.8 +/-    0.89      18.8 +/-    0.89  0.100 / 0.200
G13     231.5          18.1               16.7 +/-    4.68      38.5 +/-    4.68  0.090 / 0.170
G17     12.8           65.5                8.5 +/-    0.83       9.3 +/-    0.83  0.110 / 0.390
G19     299.1          71.6                9.7 +/-    0.59      10.2 +/-    0.59  0.140 / 0.370
G24     313.5          24.9                8.1 +/-    2.47      15.9 +/-    2.47  0.040 / 0.040
G28     75.4           47.3                8.2 +/-    0.78      10.7 +/-    0.78  0.030 / 0.040
G30     155.3          19.1               14.0 +/-    2.65      31.6 +/-    2.65  0.200 / 0.470