PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-15:58:00
G08     320.1          11.9                3.2 +/-    2.92       8.5 +/-    2.92  0.030 / 0.040
G10     304.2          54.1                5.1 +/-    0.84       6.1 +/-    0.84  0.030 / 0.040
G14     211.0          16.0                7.8 +/-    3.44      18.9 +/-    3.44  0.040 / 0.040
G15     45.8           25.6                4.4 +/-    0.59       8.5 +/-    0.59  0.050 / 0.040
G20     2.7            64.9                4.6 +/-    0.67       5.0 +/-    0.67  0.090 / 0.130
G21     111.5          68.1                4.9 +/-    0.59       5.3 +/-    0.59  0.080 / 0.130
G24     88.3           27.1                6.9 +/-    1.04      12.9 +/-    1.04  0.160 / 0.170
G27     298.4          34.3                5.5 +/-    1.46       8.9 +/-    1.46  0.100 / 0.260
G32     212.4          35.1                8.8 +/-    1.19      14.0 +/-    1.19  0.070 / 0.080