PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/10-20:12:50
G01     315.4          24.6                8.3 +/-    1.09      16.4 +/-    1.09  0.160 / 0.330
G10     91.5           48.8                8.8 +/-    0.61      11.3 +/-    0.61  0.160 / 0.360
G11     295.5          26.2                7.1 +/-    2.40      13.6 +/-    2.40  0.080 / 0.170
G14     325.1          70.8                9.4 +/-    0.76       9.9 +/-    0.76  0.080 / 0.190
G18     109.2          21.7                9.5 +/-    1.54      20.0 +/-    1.54  0.180 / 0.400
G22     304.5          16.0                6.2 +/-    4.07      15.1 +/-    4.07  0.190 / 0.380
G25     93.3           12.2               10.4 +/-    1.53      27.7 +/-    1.53  0.040 / 0.060
G31     175.9          49.8               11.3 +/-    1.45      14.2 +/-    1.45  0.050 / 0.040
G32     19.6           62.0                8.3 +/-    0.52       9.3 +/-    0.52  0.040 / 0.030