PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-16:43:10
G07     30.8           69.5               13.4 +/-    0.63      14.2 +/-    0.63  0.040 / 0.050
G08     57.9           46.2               12.5 +/-    0.96      16.6 +/-    0.96  0.040 / 0.060
G09     178.9          43.2               14.9 +/-    0.77      20.6 +/-    0.77  0.030 / 0.030
G11     125.9          31.0               14.3 +/-    1.92      24.4 +/-    1.92  0.030 / 0.030
G18     110.1          13.2               13.0 +/-    3.29      33.8 +/-    3.29  0.030 / 0.050
G23     159.1          10.6               13.5 +/-    2.93      37.2 +/-    2.93  0.040 / 0.040
G27     38.4           12.4                9.7 +/-    2.03      25.6 +/-    2.03  0.130 / 0.300
G28     266.6          49.2               15.2 +/-    4.50      19.3 +/-    4.50  0.130 / 0.300
G30     326.4          55.6               13.0 +/-    0.67      15.4 +/-    0.67  0.230 / 0.410