PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-15:27:50
G07     332.9          58.5               10.2 +/-    0.80      11.8 +/-    0.80  0.170 / 0.220
G08     109.9          49.2               11.3 +/-    0.31      14.4 +/-    0.31  0.170 / 0.420
G09     217.9          80.8                9.9 +/-    0.28      10.0 +/-    0.28  0.050 / 0.030
G11     149.0          10.0               -4.7 +/-   10.21     -13.0 +/-   10.21  0.030 / 0.040
G16     44.7           14.5                8.7 +/-    1.61      21.9 +/-    1.61  0.150 / 0.570
G23     152.6          48.0               11.2 +/-    0.40      14.5 +/-    0.40  0.040 / 0.040
G27     63.6           35.5               10.0 +/-    1.54      15.8 +/-    1.54  0.030 / 0.030
G28     231.2          19.6               10.4 +/-    1.63      23.2 +/-    1.63  0.050 / 0.060
G30     298.0          33.0                8.4 +/-    1.43      13.8 +/-    1.43  0.080 / 0.070