PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-17:58:10
G07     32.4           69.6               14.0 +/-    0.96      14.8 +/-    0.96  0.040 / 0.070
G08     57.9           46.6               12.4 +/-    0.45      16.4 +/-    0.45  0.040 / 0.070
G09     179.2          42.9               15.5 +/-    2.03      21.6 +/-    2.03  0.030 / 0.050
G11     125.8          31.3               14.9 +/-    1.12      25.5 +/-    1.12  0.050 / 0.060
G18     109.7          13.5               15.0 +/-    2.17      38.8 +/-    2.17  0.080 / 0.160
G27     38.2           11.8               10.4 +/-    2.80      28.0 +/-    2.80  0.080 / 0.140
G28     267.6          49.7               13.5 +/-    1.23      17.1 +/-    1.23  0.050 / 0.070
G30     327.7          56.5               12.8 +/-    0.98      15.0 +/-    0.98  0.050 / 0.080