PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/24-21:57:30
G07     333.7          58.2                8.8 +/-    0.79      10.1 +/-    0.79  0.100 / 0.180
G08     101.7          52.7                9.8 +/-    0.83      12.0 +/-    0.83  0.090 / 0.190
G09     193.6          73.6               11.1 +/-    0.82      11.5 +/-    0.82  0.030 / 0.050
G11     147.7          12.7               11.5 +/-    5.24      30.3 +/-    5.24  0.030 / 0.040
G23     155.2          39.0               11.5 +/-    0.74      16.9 +/-    0.74  0.070 / 0.090
G27     53.6           30.6                8.7 +/-    0.71      15.0 +/-    0.71  0.080 / 0.090
G28     238.4          30.9               10.0 +/-    1.82      17.2 +/-    1.82  0.080 / 0.480
G30     305.2          39.1                8.7 +/-    0.75      12.9 +/-    0.75  0.070 / 0.510