PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-18:57:50
G08     269.2          18.6               14.0 +/-    1.89      31.7 +/-    1.89  0.310 / 0.150
G10     57.1           59.5                9.2 +/-    0.73      10.5 +/-    0.73  0.230 / 0.200
G11     313.0          15.6                8.6 +/-    1.61      21.1 +/-    1.61  0.120 / 0.140
G14     263.7          65.3               13.0 +/-    0.70      14.1 +/-    0.70  0.210 / 0.180
G18     91.3           35.8                9.1 +/-    1.03      14.2 +/-    1.03  0.090 / 0.110
G21     152.7          11.9               14.9 +/-    1.76      39.7 +/-    1.76  0.120 / 0.100
G24     40.9           12.3                6.6 +/-    2.38      17.4 +/-    2.38  0.040 / 0.040
G27     231.9          16.6               16.9 +/-    2.60      40.5 +/-    2.60  0.040 / 0.030
G31     179.9          27.3               18.3 +/-    0.96      33.9 +/-    0.96  0.030 / 0.050
G32     329.2          74.8               11.3 +/-    0.34      11.7 +/-    0.34  0.020 / 0.020