PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/23-19:13:10
G01     316.7          22.6               10.4 +/-    1.91      21.4 +/-    1.91  0.090 / 0.200
G10     87.9           50.4               10.2 +/-    0.85      12.8 +/-    0.85  0.080 / 0.260
G11     298.5          25.0                9.5 +/-    1.13      18.5 +/-    1.13  0.250 / 0.260
G14     315.8          71.0                9.4 +/-    0.50       9.9 +/-    0.50  0.230 / 0.250
G18     107.3          23.3               11.6 +/-    1.08      23.6 +/-    1.08  0.040 / 0.050
G22     303.3          14.3                9.4 +/-    2.08      23.7 +/-    2.08  0.030 / 0.040
G25     96.0           11.1               11.7 +/-    6.41      31.8 +/-    6.41  0.040 / 0.020
G31     176.0          47.4               13.2 +/-    0.93      17.2 +/-    0.93  0.030 / 0.020
G32     16.3           63.7                9.2 +/-    0.59      10.2 +/-    0.59  0.070 / 0.040