PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-15:57:40
G01     220.5          11.8                8.8 +/-    2.86      23.5 +/-    2.86  0.240 / 0.300
G03     253.5          71.8                9.1 +/-    0.74       9.5 +/-    0.74  0.180 / 0.450
G09     298.2          11.8                1.9 +/-   24.02       5.1 +/-   24.02  0.130 / 0.270
G14     93.2           18.7                7.0 +/-    1.43      15.9 +/-    1.43  0.110 / 0.240
G16     146.8          49.4               10.0 +/-    1.21      12.7 +/-    1.21  0.040 / 0.040
G22     196.5          61.3               10.0 +/-    0.68      11.2 +/-    0.68  0.040 / 0.040
G23     312.5          42.1                7.6 +/-    1.10      10.7 +/-    1.10  0.060 / 0.050
G26     89.8           56.2                8.2 +/-    0.98       9.7 +/-    0.98  0.040 / 0.040
G31     47.9           27.7                5.0 +/-    2.33       9.3 +/-    2.33  0.250 / 0.360