PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-19:12:30
G07     310.8          48.2               12.7 +/-    0.62      16.3 +/-    0.62  0.040 / 0.050
G08     129.2          42.7               15.8 +/-    1.66      22.0 +/-    1.66  0.060 / 0.060
G09     288.7          80.9               11.5 +/-    0.59      11.6 +/-    0.59  0.020 / 0.020
G16     42.6           20.3               10.4 +/-    2.22      22.7 +/-    2.22  0.020 / 0.020
G23     146.3          56.1               15.1 +/-    0.90      17.8 +/-    0.90  0.240 / 0.190
G27     73.3           36.8               13.6 +/-    0.98      20.9 +/-    0.98  0.180 / 0.250
G28     226.3          16.4               14.3 +/-    7.67      34.3 +/-    7.67  0.030 / 0.050
G30     290.1          26.6               12.1 +/-    1.27      22.7 +/-    1.27  0.040 / 0.040