PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-14:42:50
G02     203.5          33.2               11.9 +/-    1.86      19.5 +/-    1.86  0.140 / 0.320
G03     59.2           9.8                 8.2 +/-    1.96      23.0 +/-    1.96  0.180 / 0.310
G06     161.8          68.6               10.5 +/-    0.32      11.2 +/-    0.32  0.120 / 0.170
G12     307.8          15.2                7.6 +/-    1.12      18.7 +/-    1.12  0.110 / 0.220
G17     38.6           47.1                8.3 +/-    1.38      10.9 +/-    1.38  0.040 / 0.040
G19     6.5            64.2                8.6 +/-    0.70       9.4 +/-    0.70  0.040 / 0.040
G24     299.8          37.0                8.2 +/-    2.38      12.5 +/-    2.38  0.030 / 0.020
G28     103.0          30.7               10.0 +/-    0.91      17.2 +/-    0.91  0.030 / 0.030