PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-01:12:40
G01     64.6           31.9                5.5 +/-    0.86       9.2 +/-    0.86  0.140 / 0.330
G06     182.3          10.2              -18.0 +/-   24.54     -50.0 +/-   24.54  0.160 / 0.310
G07     140.4          26.4                8.3 +/-    1.11      15.8 +/-    1.11  0.030 / 0.060
G11     52.0           29.4                4.5 +/-    1.40       8.0 +/-    1.40  0.030 / 0.050
G13     268.5          36.3                7.1 +/-    1.16      10.9 +/-    1.16  0.030 / 0.030
G15     297.0          16.5                5.2 +/-    1.67      12.5 +/-    1.67  0.030 / 0.040
G17     243.7          71.5                7.2 +/-    0.75       7.6 +/-    0.75  0.060 / 0.080
G19     228.8          47.2                9.4 +/-    0.87      12.3 +/-    0.87  0.050 / 0.090
G28     30.0           57.6                4.7 +/-    0.79       5.4 +/-    0.79  0.060 / 0.110
G30     139.9          52.4                6.6 +/-    0.94       8.0 +/-    0.94  0.060 / 0.090