PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/23-04:12:30
G07     24.9           68.6                4.7 +/-    0.67       5.0 +/-    0.67  0.040 / 0.050
G08     59.1           45.1                3.6 +/-    0.64       4.8 +/-    0.64  0.040 / 0.050
G09     176.5          45.3                7.4 +/-    1.90      10.0 +/-    1.90  0.080 / 0.140
G11     127.2          29.0                7.7 +/-    1.71      13.8 +/-    1.71  0.080 / 0.120
G23     161.1          20.1                5.5 +/-    0.61      12.1 +/-    0.61  0.060 / 0.120
G27     40.8           18.0                2.1 +/-    1.54       4.9 +/-    1.54  0.050 / 0.120
G28     259.0          44.8                5.0 +/-    1.10       6.7 +/-    1.10  0.030 / 0.040
G30     319.9          50.3                4.8 +/-    1.04       6.1 +/-    1.04  0.030 / 0.040