PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-23:57:40
G02     237.1          74.9                9.2 +/-    0.32       9.4 +/-    0.32  0.100 / 0.100
G05     171.7          14.8               12.2 +/-    2.31      30.4 +/-    2.31  0.070 / 0.080
G06     40.8           63.8                7.2 +/-    0.43       7.9 +/-    0.43  0.210 / 0.240
G12     320.6          46.8                9.0 +/-    0.39      11.8 +/-    0.39  0.370 / 0.390
G17     69.1           22.9                7.9 +/-    2.54      16.2 +/-    2.54  0.030 / 0.050
G19     54.7           39.7                8.9 +/-    1.22      13.1 +/-    1.22  0.040 / 0.060
G24     246.2          35.8               10.9 +/-    1.77      17.1 +/-    1.77  0.120 / 0.170
G25     315.9          11.0              -10.4 +/-   33.72     -28.4 +/-   33.72  0.120 / 0.180