PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-17:57:30
G02     202.6          29.0               12.0 +/-    1.40      21.5 +/-    1.40  0.080 / 0.370
G06     161.1          65.8               12.5 +/-    0.75      13.6 +/-    0.75  0.140 / 0.350
G12     306.1          14.7               10.7 +/-    1.91      26.9 +/-    1.91  0.040 / 0.130
G17     31.5           52.8               10.5 +/-    0.61      12.9 +/-    0.61  0.050 / 0.130
G19     343.3          68.2               11.3 +/-    0.93      12.1 +/-    0.93  0.070 / 0.090
G24     301.4          36.7               13.1 +/-    1.54      20.1 +/-    1.54  0.060 / 0.100
G28     98.2           34.0               10.7 +/-    0.54      17.3 +/-    0.54  0.070 / 0.140