PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/01-02:28:00
G01     81.9           33.1                5.3 +/-    0.81       8.7 +/-    0.81  0.040 / 0.050
G07     131.3          39.5                9.5 +/-    1.22      13.9 +/-    1.22  0.050 / 0.050
G11     63.3           37.9                4.5 +/-    1.65       6.7 +/-    1.65  0.050 / 0.070
G13     287.3          37.0                5.5 +/-    1.01       8.4 +/-    1.01  0.050 / 0.060
G15     309.6          13.3                3.3 +/-    3.62       8.6 +/-    3.62  0.120 / 0.220
G17     220.9          59.6                8.7 +/-    1.70      10.0 +/-    1.70  0.110 / 0.160
G19     218.2          34.1                8.5 +/-    1.46      13.6 +/-    1.46  0.040 / 0.060
G28     4.0            60.9                4.5 +/-    0.67       5.0 +/-    0.67  0.040 / 0.060
G30     123.6          66.3                8.1 +/-    0.35       8.8 +/-    0.35  0.050 / 0.050