PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-19:58:00
G01     250.0          34.7               11.9 +/-    1.68      18.9 +/-    1.68  0.040 / 0.040
G03     315.6          46.0                7.6 +/-    0.77      10.1 +/-    0.77  0.040 / 0.040
G11     237.9          12.3               10.7 +/-    3.61      28.3 +/-    3.61  0.070 / 0.370
G14     61.0           40.6                9.0 +/-    0.94      13.0 +/-    0.94  0.130 / 0.390
G22     303.2          67.2                6.8 +/-    0.75       7.3 +/-    0.75  0.070 / 0.110
G23     287.5          20.1               10.0 +/-    2.51      22.0 +/-    2.51  0.100 / 0.080
G25     39.3           9.8                 5.8 +/-    1.95      16.4 +/-    1.95  0.030 / 0.030
G26     136.1          38.7               12.9 +/-    0.50      19.1 +/-    0.50  0.040 / 0.030
G31     40.5           58.0                6.9 +/-    0.59       8.0 +/-    0.59  0.050 / 0.090
G32     78.3           22.3                8.7 +/-    1.76      18.1 +/-    1.76  0.050 / 0.090