PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-03:12:50
G01     122.1          15.4                6.2 +/-    1.50      15.3 +/-    1.50  0.030 / 0.040
G07     75.7           66.4                4.2 +/-    0.81       4.6 +/-    0.81  0.030 / 0.040
G08     45.6           32.1                1.8 +/-    0.41       3.1 +/-    0.41  0.130 / 0.190
G09     175.9          28.0                5.6 +/-    1.03      10.2 +/-    1.03  0.150 / 0.230
G11     109.0          38.7                4.6 +/-    0.80       6.8 +/-    0.80  0.090 / 0.230
G13     319.0          17.0                1.8 +/-    1.33       4.3 +/-    1.33  0.090 / 0.170
G17     199.7          23.3                4.3 +/-    1.45       8.7 +/-    1.45  0.080 / 0.250
G18     94.3           19.2                5.3 +/-    1.45      11.9 +/-    1.45  0.090 / 0.220
G28     283.1          54.4                4.3 +/-    0.87       5.2 +/-    0.87  0.040 / 0.060
G30     338.2          64.6                2.2 +/-    0.48       2.5 +/-    0.48  0.030 / 0.040