PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-03:27:50
G01     122.6          15.0                8.1 +/-    1.30      20.1 +/-    1.30  0.030 / 0.040
G07     73.9           66.7                6.3 +/-    0.71       6.8 +/-    0.71  0.030 / 0.040
G08     45.9           32.6                4.2 +/-    0.42       7.0 +/-    0.42  0.110 / 0.400
G09     175.8          28.5                7.8 +/-    1.49      14.2 +/-    1.49  0.100 / 0.300
G11     109.8          38.5                7.4 +/-    0.68      11.1 +/-    0.68  0.100 / 0.250
G13     319.3          16.5                2.9 +/-    1.74       7.1 +/-    1.74  0.080 / 0.230
G17     199.6          22.7                5.4 +/-    1.46      11.2 +/-    1.46  0.170 / 0.260
G18     95.1           18.9                7.8 +/-    0.91      17.6 +/-    0.91  0.150 / 0.210
G28     282.2          54.1                7.6 +/-    1.04       9.1 +/-    1.04  0.030 / 0.040
G30     337.3          64.0                4.1 +/-    0.66       4.5 +/-    0.66  0.040 / 0.040