PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-01:27:40
G02     199.9          24.5               13.0 +/-    3.61      25.7 +/-    3.61  0.040 / 0.040
G06     171.2          55.6               11.9 +/-    0.62      14.1 +/-    0.62  0.040 / 0.040
G13     226.2          11.7               11.7 +/-    1.69      31.6 +/-    1.69  0.070 / 0.070
G17     20.0           60.5               10.4 +/-    0.81      11.8 +/-    0.81  0.070 / 0.080
G19     329.5          70.5                9.3 +/-    0.57       9.8 +/-    0.57  0.030 / 0.030
G24     308.9          30.7               11.5 +/-    0.65      19.9 +/-    0.65  0.040 / 0.040
G28     90.9           38.0               10.6 +/-    0.87      15.9 +/-    0.87  0.160 / 0.370
G30     156.4          10.1                9.4 +/-    8.40      26.1 +/-    8.40  0.150 / 0.180