PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-20:27:50
G01     270.2          40.8               11.7 +/-    3.06      16.7 +/-    3.06  0.120 / 0.130
G03     315.9          30.4                9.2 +/-    0.94      16.0 +/-    0.94  0.140 / 0.120
G10     130.0          17.1                9.5 +/-    1.16      22.5 +/-    1.16  0.050 / 0.050
G11     251.1          20.4               11.0 +/-    2.61      23.9 +/-    2.61  0.030 / 0.050
G14     43.8           49.9                8.2 +/-    0.67      10.3 +/-    0.67  0.020 / 0.020
G22     314.0          51.8                9.8 +/-    0.87      12.1 +/-    0.87  0.030 / 0.020
G25     51.9           16.7                8.6 +/-    3.14      20.5 +/-    3.14  0.090 / 0.200
G26     148.8          24.9               12.6 +/-    1.40      24.6 +/-    1.40  0.090 / 0.230
G31     55.3           74.9               10.1 +/-    0.49      10.4 +/-    0.49  0.040 / 0.060
G32     64.3           32.6                8.3 +/-    1.25      13.8 +/-    1.25  0.050 / 0.060