PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-15:28:00
G01     73.4           33.2               12.0 +/-    0.73      19.7 +/-    0.73  0.030 / 0.030
G07     136.1          33.1               13.5 +/-    1.05      22.1 +/-    1.05  0.030 / 0.030
G11     55.0           31.8               11.6 +/-    1.97      19.6 +/-    1.97  0.070 / 0.070
G13     277.1          37.9               11.8 +/-    1.47      17.8 +/-    1.47  0.080 / 0.100
G15     306.6          13.5               10.1 +/-    2.00      26.0 +/-    2.00  0.060 / 0.100
G17     229.6          66.9               13.9 +/-    0.79      15.0 +/-    0.79  0.040 / 0.100
G18     50.6           19.1               12.1 +/-    3.17      27.2 +/-    3.17  0.170 / 0.190
G19     222.5          37.1               13.9 +/-    1.59      21.2 +/-    1.59  0.080 / 0.170
G28     15.4           59.8               13.7 +/-    0.82      15.6 +/-    0.82  0.040 / 0.080
G30     132.9          64.9               13.7 +/-    0.60      15.0 +/-    0.60  0.050 / 0.080