PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-21:12:50
G01     45.4           21.5                9.1 +/-    3.21      19.3 +/-    3.21  0.080 / 0.280
G06     176.0          32.1               14.8 +/-    0.98      24.9 +/-    0.98  0.070 / 0.310
G11     43.8           10.7                9.0 +/-    2.43      24.7 +/-    2.43  0.140 / 0.300
G13     244.4          26.6               13.5 +/-    2.37      25.5 +/-    2.37  0.160 / 0.330
G15     277.9          14.4               10.9 +/-    1.34      27.6 +/-    1.34  0.020 / 0.020
G17     326.2          76.2               12.9 +/-    0.39      13.3 +/-    0.39  0.020 / 0.020
G19     257.6          63.6               13.0 +/-    0.88      14.3 +/-    0.88  0.080 / 0.090
G24     318.3          13.5                6.0 +/-   16.40      15.5 +/-   16.40  0.080 / 0.080
G28     62.2           50.0               10.7 +/-    0.73      13.4 +/-    0.73  0.040 / 0.060
G30     152.1          33.7               13.0 +/-    0.94      21.1 +/-    0.94  0.050 / 0.050