PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-23:42:50
G01     38.3           11.2               10.5 +/-    4.13      28.4 +/-    4.13  0.160 / 0.210
G02     199.1          15.9               18.3 +/-    3.35      44.5 +/-    3.35  0.120 / 0.170
G06     173.4          46.7               13.4 +/-    0.62      17.6 +/-    0.62  0.280 / 0.340
G13     232.5          17.4               14.0 +/-    2.64      32.8 +/-    2.64  0.220 / 0.230
G17     4.5            67.8               10.1 +/-    0.44      10.9 +/-    0.44  0.090 / 0.130
G19     298.5          70.9               10.8 +/-    0.68      11.4 +/-    0.68  0.150 / 0.180
G24     313.9          24.6                9.7 +/-    1.62      19.2 +/-    1.62  0.040 / 0.050
G28     80.8           42.9               10.3 +/-    0.92      14.3 +/-    0.92  0.060 / 0.050
G30     155.5          18.9               15.5 +/-    3.07      35.0 +/-    3.07  0.040 / 0.080