PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/30-14:28:10
G02     217.6          61.7               12.0 +/-    0.49      13.5 +/-    0.49  0.040 / 0.080
G06     54.7           74.2                9.5 +/-    0.69       9.8 +/-    0.69  0.030 / 0.060
G12     319.2          37.5                6.9 +/-    1.10      10.5 +/-    1.10  0.060 / 0.080
G17     61.0           28.8                7.1 +/-    1.08      12.7 +/-    1.08  0.080 / 0.100
G19     44.3           46.2                6.9 +/-    0.68       9.2 +/-    0.68  0.090 / 0.490
G24     264.7          40.9               10.8 +/-    0.98      15.4 +/-    0.98  0.110 / 0.510
G28     124.6          11.3               11.1 +/-    2.64      30.2 +/-    2.64  0.040 / 0.030