PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/29-08:27:50
G01     65.7           32.1                4.3 +/-    0.59       7.3 +/-    0.59  0.040 / 0.040
G07     139.7          25.7                6.4 +/-    1.86      12.3 +/-    1.86  0.040 / 0.040
G11     49.9           26.3                4.7 +/-    1.30       9.0 +/-    1.30  0.050 / 0.120
G13     268.3          37.1                8.6 +/-    1.27      13.1 +/-    1.27  0.040 / 0.150
G15     301.5          14.4                3.1 +/-    1.89       7.8 +/-    1.89  0.080 / 0.100
G17     245.7          75.3                8.4 +/-    0.81       8.7 +/-    0.81  0.080 / 0.110
G18     44.2           14.3                1.8 +/-    1.30       4.4 +/-    1.30  0.090 / 0.190
G19     227.2          42.6                7.9 +/-    1.57      11.0 +/-    1.57  0.080 / 0.230
G28     24.6           58.8                5.0 +/-    0.84       5.8 +/-    0.84  0.050 / 0.080
G30     140.1          59.3                8.2 +/-    0.66       9.4 +/-    0.66  0.050 / 0.090