PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-19:42:50
G01     264.3          40.3               12.0 +/-    1.78      17.3 +/-    1.78  0.080 / 0.080
G03     316.5          33.7               10.5 +/-    1.06      17.1 +/-    1.06  0.090 / 0.080
G10     132.2          12.4               15.3 +/-    2.31      40.4 +/-    2.31  0.160 / 0.530
G11     244.8          17.4               11.8 +/-    1.96      27.6 +/-    1.96  0.180 / 0.360
G14     49.2           46.7               10.4 +/-    0.76      13.7 +/-    0.76  0.040 / 0.070
G18     225.3          34.8               14.0 +/-    0.60      22.3 +/-    0.60  0.050 / 0.080
G22     312.8          56.0               10.6 +/-    0.91      12.5 +/-    0.91  0.080 / 0.280
G25     44.3           11.9               10.1 +/-    1.40      27.1 +/-    1.40  0.080 / 0.250
G31     50.6           74.6               11.7 +/-    0.66      12.1 +/-    0.66  0.040 / 0.050
G32     67.3           30.7               10.7 +/-    0.54      18.5 +/-    0.54  0.040 / 0.050