PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-18:12:40
G01     309.9          30.9                8.9 +/-    2.06      15.3 +/-    2.06  0.080 / 0.160
G10     102.2          43.0               11.3 +/-    0.61      15.7 +/-    0.61  0.120 / 0.160
G11     287.3          27.4                8.6 +/-    1.54      16.0 +/-    1.54  0.050 / 0.180
G14     347.2          68.4                9.2 +/-    1.30       9.8 +/-    1.30  0.060 / 0.180
G18     115.6          14.9               10.2 +/-    0.98      25.4 +/-    0.98  0.060 / 0.120
G22     308.4          23.3                6.5 +/-    2.49      13.3 +/-    2.49  0.070 / 0.100
G25     85.8           15.6               10.4 +/-    0.88      25.5 +/-    0.88  0.030 / 0.040
G31     170.4          60.9               14.8 +/-    0.80      16.7 +/-    0.80  0.030 / 0.040
G32     32.3           55.0                8.8 +/-    1.03      10.5 +/-    1.03  0.050 / 0.060