PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/22-18:43:00
G08     266.9          17.7                9.2 +/-    1.74      21.5 +/-    1.74  0.320 / 0.320
G10     61.9           58.6                9.1 +/-    0.72      10.5 +/-    0.72  0.310 / 0.210
G11     311.5          17.0                8.3 +/-    2.22      19.6 +/-    2.22  0.060 / 0.090
G14     269.1          66.6                8.8 +/-    1.04       9.5 +/-    1.04  0.060 / 0.100
G18     93.7           34.1                8.3 +/-    1.32      13.4 +/-    1.32  0.100 / 0.270
G24     39.8           10.4                8.5 +/-    3.59      23.5 +/-    3.59  0.070 / 0.410
G27     230.1          14.9                9.4 +/-    1.97      23.3 +/-    1.97  0.030 / 0.040
G31     179.3          30.1                9.6 +/-    1.27      16.8 +/-    1.27  0.030 / 0.040
G32     338.9          73.8                8.6 +/-    0.46       8.9 +/-    0.46  0.030 / 0.020