PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-22:43:00
G01     68.2           32.6               10.6 +/-    0.67      17.6 +/-    0.67  0.090 / 0.260
G07     138.7          29.4               13.5 +/-    1.07      23.9 +/-    1.07  0.140 / 0.310
G11     53.5           30.9                9.8 +/-    1.13      16.8 +/-    1.13  0.040 / 0.070
G13     272.2          37.0               12.7 +/-    2.65      19.4 +/-    2.65  0.040 / 0.080
G15     300.2          15.9                8.3 +/-    1.58      20.1 +/-    1.58  0.050 / 0.080
G17     235.7          66.9               11.6 +/-    0.58      12.5 +/-    0.58  0.050 / 0.090
G18     47.8           17.5                9.5 +/-    1.83      22.2 +/-    1.83  0.030 / 0.040
G19     226.0          43.6               13.5 +/-    1.99      18.6 +/-    1.99  0.030 / 0.030
G28     24.4           58.6               10.1 +/-    2.44      11.6 +/-    2.44  0.100 / 0.210
G30     137.5          57.1               12.9 +/-    0.54      15.1 +/-    0.54  0.100 / 0.180