PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-01:43:00
G01     57.9           29.7                3.7 +/-    0.52       6.5 +/-    0.52  0.030 / 0.030
G06     180.9          15.6               10.6 +/-    1.25      26.1 +/-    1.25  0.030 / 0.030
G07     143.3          20.6                7.2 +/-    1.48      15.6 +/-    1.48  0.160 / 0.320
G11     48.6           24.5                4.0 +/-    1.00       7.9 +/-    1.00  0.250 / 0.290
G13     260.9          34.3                7.8 +/-    1.00      12.5 +/-    1.00  0.060 / 0.100
G15     291.1          16.8                5.7 +/-    2.01      13.7 +/-    2.01  0.060 / 0.100
G17     263.7          76.0                6.6 +/-    0.45       6.8 +/-    0.45  0.040 / 0.060
G19     235.4          53.0                5.8 +/-    0.99       7.1 +/-    0.99  0.040 / 0.060
G28     40.3           55.6                4.7 +/-    0.43       5.5 +/-    0.43  0.080 / 0.120
G30     144.2          45.9                8.1 +/-    0.55      10.8 +/-    0.55  0.060 / 0.140