PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-01:43:00
G01     70.4           32.9                5.3 +/-    1.49       8.8 +/-    1.49  0.040 / 0.050
G07     137.6          31.0                9.1 +/-    0.86      15.6 +/-    0.86  0.040 / 0.050
G11     55.3           32.6                4.5 +/-    1.65       7.4 +/-    1.65  0.030 / 0.030
G13     275.0          37.2                6.3 +/-    2.79       9.7 +/-    2.79  0.040 / 0.030
G15     301.6          15.8                4.0 +/-    1.59       9.8 +/-    1.59  0.040 / 0.100
G17     233.6          67.7                6.9 +/-    0.71       7.4 +/-    0.71  0.050 / 0.080
G19     224.6          42.7                8.3 +/-    2.00      11.6 +/-    2.00  0.070 / 0.090
G28     21.4           58.9                3.6 +/-    2.84       4.1 +/-    2.84  0.050 / 0.100
G30     135.5          56.8                9.3 +/-    0.69      10.9 +/-    0.69  0.060 / 0.090