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                6.0 +/-    1.79      14.7 +/-    1.79  0.030 / 0.030
G07     75.7           66.4                4.2 +/-    0.56       4.6 +/-    0.56  0.030 / 0.030
G08     45.6           32.1                1.6 +/-    1.19       2.7 +/-    1.19  0.080 / 0.200
G09     175.9          28.0                5.0 +/-    2.80       9.2 +/-    2.80  0.090 / 0.160
G11     109.0          38.7                5.2 +/-    0.80       7.7 +/-    0.80  0.240 / 0.270
G13     319.0          17.0                2.9 +/-    2.80       6.9 +/-    2.80  0.150 / 0.290
G17     199.7          23.3                4.0 +/-    2.88       8.2 +/-    2.88  0.120 / 0.080
G18     94.3           19.2                4.6 +/-    1.59      10.3 +/-    1.59  0.080 / 0.080
G28     283.1          54.4                2.0 +/-    2.70       2.4 +/-    2.70  0.030 / 0.020
G30     338.2          64.6                3.6 +/-    0.50       3.9 +/-    0.50  0.030 / 0.030