PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-20:42:50
G07     9.2            66.5               13.6 +/-    0.68      14.7 +/-    0.68  0.040 / 0.040
G08     72.4           50.1               13.2 +/-    0.75      16.6 +/-    0.75  0.040 / 0.040
G09     182.0          59.0               15.2 +/-    0.50      17.4 +/-    0.50  0.230 / 0.100
G11     134.7          23.3               16.1 +/-    1.06      32.7 +/-    1.06  0.100 / 0.140
G23     159.6          28.6               14.9 +/-    0.89      26.8 +/-    0.89  0.110 / 0.100
G27     45.6           24.9               11.2 +/-    2.04      21.9 +/-    2.04  0.060 / 0.120
G28     248.0          36.8               15.0 +/-    1.90      23.0 +/-    1.90  0.040 / 0.040
G30     313.4          45.0               11.7 +/-    1.03      15.8 +/-    1.03  0.040 / 0.030