PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-17:57:50
G01     38.4           11.6                8.1 +/-    4.06      21.9 +/-    4.06  0.120 / 0.180
G02     200.0          13.0               12.5 +/-    1.76      32.5 +/-    1.76  0.120 / 0.180
G06     171.6          47.4               11.7 +/-    1.00      15.2 +/-    1.00  0.080 / 0.140
G13     232.4          17.8               10.7 +/-    1.38      24.8 +/-    1.38  0.090 / 0.160
G17     10.8           66.1                8.9 +/-    0.66       9.7 +/-    0.66  0.170 / 0.300
G19     290.8          69.6                9.7 +/-    0.47      10.3 +/-    0.47  0.160 / 0.290
G24     313.6          25.2                9.5 +/-    1.54      18.6 +/-    1.54  0.100 / 0.390
G28     79.6           43.6               10.5 +/-    0.69      14.5 +/-    0.69  0.090 / 0.430
G30     156.2          21.7               12.6 +/-    1.67      26.6 +/-    1.67  0.040 / 0.090