PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/28-17:12:40
G01     220.2          11.4               11.7 +/-    2.65      31.7 +/-    2.65  0.190 / 0.380
G03     254.6          71.4                7.9 +/-    0.81       8.3 +/-    0.81  0.210 / 0.440
G09     298.7          12.5                4.7 +/-   19.90      12.5 +/-   19.90  0.140 / 0.230
G14     93.8           18.3                7.2 +/-    1.02      16.6 +/-    1.02  0.130 / 0.290
G16     145.2          50.3                9.1 +/-    0.94      11.4 +/-    0.94  0.050 / 0.040
G22     197.8          61.4                8.8 +/-    0.43       9.9 +/-    0.43  0.040 / 0.030
G23     312.6          42.1                6.9 +/-    1.01       9.8 +/-    1.01  0.500 / 0.320
G26     90.3           56.6                7.6 +/-    0.60       9.0 +/-    0.60  0.280 / 0.260
G31     47.9           28.0                5.0 +/-    1.87       9.1 +/-    1.87  0.040 / 0.060