PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-11:12:50
G01     71.7           33.1                3.1 +/-    0.97       5.2 +/-    0.97  0.030 / 0.040
G07     136.9          31.1                4.8 +/-    0.80       8.3 +/-    0.80  0.030 / 0.040
G11     53.4           30.3                2.9 +/-    0.81       5.1 +/-    0.81  0.080 / 0.170
G13     275.0          37.9                4.6 +/-    1.11       6.9 +/-    1.11  0.100 / 0.210
G15     307.8          12.3                1.5 +/-    1.12       4.1 +/-    1.12  0.040 / 0.080
G17     232.5          70.1                4.9 +/-    1.16       5.2 +/-    1.16  0.040 / 0.110
G18     48.6           17.7                1.1 +/-    0.95       2.6 +/-    0.95  0.060 / 0.100
G19     223.3          36.6                5.3 +/-    0.94       8.2 +/-    0.94  0.050 / 0.080
G28     16.4           59.8                2.9 +/-    0.46       3.3 +/-    0.46  0.050 / 0.110
G30     134.8          64.3                4.0 +/-    0.63       4.4 +/-    0.63  0.050 / 0.120