PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-17:28:00
G01     45.3           21.5                9.0 +/-    2.93      19.0 +/-    2.93  0.110 / 0.280
G06     175.2          32.9               11.7 +/-    1.73      19.3 +/-    1.73  0.130 / 0.300
G11     43.5           9.6                 6.2 +/-    5.52      17.4 +/-    5.52  0.060 / 0.080
G13     244.0          26.7               11.2 +/-    3.00      21.0 +/-    3.00  0.060 / 0.080
G15     279.5          14.0                9.6 +/-    2.10      24.5 +/-    2.10  0.230 / 0.270
G17     338.6          75.8               11.5 +/-    0.29      11.8 +/-    0.29  0.290 / 0.300
G19     256.1          62.3               10.9 +/-    0.46      12.2 +/-    0.46  0.020 / 0.030
G24     318.1          14.2                7.0 +/-    1.69      17.9 +/-    1.69  0.030 / 0.030
G28     61.8           50.2               10.3 +/-    0.91      13.0 +/-    0.91  0.040 / 0.040
G30     152.5          35.2               11.2 +/-    1.66      17.8 +/-    1.66  0.040 / 0.040