PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-02:28:00
G01     123.5          14.2               10.6 +/-    2.14      26.9 +/-    2.14  0.030 / 0.040
G07     71.5           67.0                5.2 +/-    0.78       5.6 +/-    0.78  0.030 / 0.040
G08     46.5           33.6                3.0 +/-    0.46       4.9 +/-    0.46  0.120 / 0.540
G09     176.3          30.2                8.5 +/-    1.66      14.8 +/-    1.66  0.110 / 0.390
G11     111.2          38.0                8.4 +/-    1.40      12.7 +/-    1.40  0.050 / 0.060
G13     319.7          15.6                1.4 +/-    1.42       3.4 +/-    1.42  0.060 / 0.050
G17     199.3          21.4                8.0 +/-    1.22      16.9 +/-    1.22  0.110 / 0.310
G18     95.9           18.4                8.3 +/-    0.90      19.1 +/-    0.90  0.100 / 0.290
G28     280.0          53.4                6.6 +/-    1.03       8.0 +/-    1.03  0.030 / 0.040
G30     336.1          63.2                3.0 +/-    0.66       3.3 +/-    0.66  0.030 / 0.040