PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-20:57:50
G07     337.4          59.5               10.4 +/-    0.46      11.9 +/-    0.46  0.090 / 0.170
G08     98.6           53.5               13.6 +/-    0.72      16.5 +/-    0.72  0.070 / 0.140
G09     190.1          70.9               13.9 +/-    1.13      14.6 +/-    1.13  0.120 / 0.100
G11     146.0          14.4               12.0 +/-    3.14      30.2 +/-    3.14  0.080 / 0.150
G23     155.8          35.7               11.9 +/-    1.00      18.7 +/-    1.00  0.040 / 0.030
G27     51.4           29.3               10.0 +/-    1.74      17.7 +/-    1.74  0.040 / 0.040
G28     240.4          32.8               11.3 +/-    1.41      18.7 +/-    1.41  0.140 / 0.480
G30     306.8          40.1               10.4 +/-    1.57      15.1 +/-    1.57  0.230 / 0.570